I've also used the same solution, although I ended up scaling from a Pi to a larger 13th gen Intel box with two USB Corals due to number of cameras. It's been ridiculously reliable running from a docker compose stack for years now, including using Watchtower to auto-upgrade the Frigate container. It's really easy to map the corals via docker compose as well.
It's nuts how cheaply you can make such a good system with AI-detection features, its more than paid for itself vs commercial options with monthly fees. High quality weatherproof PoE cameras are crazy affordable now too, and you can VLAN them off your home network with no connection to the internet to further harden the system.
I have almost exactly the same setup, except using the intel gpu for accelerated inference with an OpenVINO Yolo model and HA for notifications. Super reliable.
Bought both back roughly just after Covid era so a while ago. It was even worse during the Covid chip shortage, I had to pay a significant premium over list price for the 2nd one. Haven’t had tried to buy one since so don’t have any advice I’m afraid.
It's nuts how cheaply you can make such a good system with AI-detection features, its more than paid for itself vs commercial options with monthly fees. High quality weatherproof PoE cameras are crazy affordable now too, and you can VLAN them off your home network with no connection to the internet to further harden the system.